Method for preparing chemcial leakage accident adsorption agent through peat

A technology of chemicals and adsorbents, applied in chemical instruments and methods, inorganic chemistry, other chemical processes, etc., can solve the problems of environmental pollution and high cost, and achieve the effect of being lighter than water and having a developed pore size

Inactive Publication Date: 2016-02-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is the problem of high cost and environmental pollution in the prior art, and a new method for preparing chemical leakage accident adsorbent from peat is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Fully mix 150g of pulverized low-level peat with 375mL of 2mol / L NaOH aqueous solution, seal and impregnate for 24 hours, then place it in an electric heating box at 110°C for 24 hours, take it out, wash it until pH = 7, and dry it for later use. Grind the dried peat after alkali heat treatment to 40 mesh, take the ground peat and fully mix 8g and 30mL of phosphoric acid solution with a mass solubility of 38%, and place the fully mixed material in a drying oven at 200°C Air pre-oxidation 6h, natural cooling. The pre-oxidized material was heated up to 800°C at a rate of 5°C / min under a nitrogen atmosphere, carbonized and activated at a constant temperature for 2 hours, and taken out after natural cooling. After washing with distilled water at 100°C until pH = 7, an activated carbon adsorbent with developed pore size, high mesoporosity and lighter than water can be prepared. Activated carbon adsorbent is used to adsorb aniline in 200ml aniline solution, the concentration...

Embodiment 2

[0022] Fully mix 150g of pulverized median peat with 375mL of 2mol / L NaOH aqueous solution, seal and impregnate for 24 hours, then place it in an electric heating box at 110°C for 24 hours, take it out, wash it until pH = 7, and dry it for later use. Grind the dried peat after alkali heat treatment to 40 mesh, take the ground peat and fully mix 8g and 30mL of phosphoric acid solution with a mass solubility of 38%, and place the fully mixed material in a drying oven at 200°C Air pre-oxidation 6h, natural cooling. The pre-oxidized material was heated up to 800°C at a rate of 5°C / min under a nitrogen atmosphere, carbonized and activated at a constant temperature for 2 hours, and taken out after natural cooling. After washing with distilled water at 100°C until pH = 7, an activated carbon adsorbent with developed pore size, high mesoporosity and lighter than water can be prepared. Activated carbon adsorbent is used to adsorb aniline in 200ml aniline solution, the concentration of...

Embodiment 3

[0024] Fully mix 150g of crushed high-level peat with 375mL of 2mol / L NaOH aqueous solution, seal and impregnate for 24 hours, then place it in an electric heating box at 110°C for 24 hours, take it out, wash it until pH = 6, and dry it for later use. Grind the dried peat after alkali heat treatment to 40 mesh, take the ground peat and fully mix 8g and 30mL of phosphoric acid solution with a mass solubility of 38%, and place the fully mixed material in a drying oven at 200°C Air pre-oxidation 6h, natural cooling. The pre-oxidized material was heated up to 800°C at a rate of 5°C / min under a nitrogen atmosphere, carbonized and activated at a constant temperature for 2 hours, and taken out after natural cooling. After washing with distilled water at 100°C until pH = 7, an activated carbon adsorbent with developed pore size, high mesoporosity and lighter than water can be prepared. Activated carbon adsorbent is used to adsorb aniline in 200ml aniline solution, the concentration o...

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Abstract

The invention relates to a method for preparing a chemcial leakage accident adsorption agent through peat. The method mainly solves the problems that in the prior art, cost is high and environments are polluted. According to the method for preparing the chemcial leakage accident adsorption agent through the peat, the smashed peat and alkaline liquor are mixed and dipped in a sealed mode, then placed into an electric heating box to be heated at constant temperature, taken out and washed till pH is 6-8 and then dried, the dried peat is ground, the ground peat is mixed with a phosphoric acid solution, the mixed solution is placed in a drying box for air preoxidation, the preoxidized peat is heated under nitrogen atmosphere for carbonization and activation and then taken out after being cooled, the chemical leakage accident adsorption agent is obtained after washing. The technical scheme well solves the problems and can be used for preparing the chemical leakage accident adsorption agent.

Description

technical field [0001] The invention relates to a method for preparing an adsorbent for chemical leakage accidents from peat. Background technique [0002] Since the 1960s, there have been many sudden chemical environmental pollution accidents around the world, such as the Rhine River pollution incident in 1986, the Danube River pollution incident in 2000, and the Songhua River pollution incident in 2005. These sudden environmental pollution accidents not only caused huge economic losses, but also brought huge disasters to the environment, human health, society and economic development. Therefore, the emergency treatment technology for sudden chemical environmental pollution accidents has attracted great attention from governments all over the world. In addition to actively carrying out how to prevent and predict the occurrence of sudden environmental disasters, people have also carried out technical research on emergency disposal of leaked chemicals and wastewater, providi...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30
Inventor 张宏哲牟桂琴刘硕郭亚逢唐晓丽张志远
Owner CHINA PETROLEUM & CHEM CORP
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